demo_app: Remove screen_reader from default features

closes https://github.com/emilk/egui/issues/338

egui_demo_app/Cargo.toml

@@ -14,7 +14,7 @@ eframe = { version = "0.11.0", path = "../eframe", features = ["time"] }
 egui_demo_lib = { version = "0.11.0", path = "../egui_demo_lib" }
 
 [features]
-default = ["persistence", "screen_reader"]
+default = ["persistence"]
 http = ["eframe/http", "egui_demo_lib/http"]
 persistence = ["eframe/persistence", "egui_demo_lib/persistence"]
 screen_reader = ["eframe/screen_reader"] # experimental

egui_demo_lib/src/apps/demo/widgets.rs

@@ -55,6 +55,17 @@ impl Widgets {
             ui.add(crate::__egui_github_link_file_line!());
         });
 
+        egui::ComboBox::from_label("Version")
+            .width(150.0)
+            .selected_text("foo")
+            .show_ui(ui, |ui| {
+                egui::CollapsingHeader::new("Dev")
+                    .default_open(true)
+                    .show(ui, |ui| {
+                        ui.label("contents");
+                    });
+            });
+
         ui.horizontal_wrapped(|ui| {
             // Trick so we don't have to add spaces in the text below:
             ui.spacing_mut().item_spacing.x = ui.fonts()[TextStyle::Body].glyph_width(' ');

egui_glium/examples/pure.rs

@@ -36,6 +36,17 @@ fn main() {
                 if ui.button("Quit").clicked() {
                     quit = true;
                 }
+
+                egui::ComboBox::from_label("Version")
+                    .width(150.0)
+                    .selected_text("foo")
+                    .show_ui(ui, |ui| {
+                        egui::CollapsingHeader::new("Dev")
+                            .default_open(true)
+                            .show(ui, |ui| {
+                                ui.label("contents");
+                            });
+                    });
             });
 
             let (needs_repaint, shapes) = egui.end_frame(&display);